rootkithunter gives warnings for sh and perl

[sp11 <sp113438@telfort.nl>]

Hello,

rkhunter gives warnings for sh and perl:

[23:01:57] Warning: The file properties have changed:
[23:01:57]          File: /bin/sh
[23:01:57]          Current hash: add19e504c254758f2ea8dcda3821c77fafb4923 
[23:01:57]          Stored hash : 3e4f053d7520819f5e45a7792c972b05e4ff234e 
[23:01:57]          Current inode: 1958022    Stored inode: 1957896
[23:01:57]          Current file modification time: 1359928637 (03-Feb-2013 22:57:17) 
[23:01:57]          Stored file modification time : 1342538237 (17-Jul-2012 17:17:17)


[23:02:04] Warning: The file properties have changed:
[23:02:04]          File: /usr/bin/perl
[23:02:04]          Current hash: 13e50d52280d120bf8c71c7eaf4e7431c9afa392 
[23:02:04]          Stored hash : f62bbb9e85d386d16f97ea0f3e8afaaf36a36696
[23:02:04]          Current inode: 65882    Stored inode: 66294
[23:02:04]          Current file modification time: 1355246023 (11-Dec-2012 18:13:43) 
[23:02:04]          Stored file modification time : 1324459850 (21-Dec-2011 10:30:50)

When I reinstall dash (delivers /bin/sh) and perl these warning don't
go away.

Any idea?

Thanks.